:root {
    /* Paleta Neutra e Menos Cansativa */
    --primary: #2c3e50;
    --secondary: #3498db;
    --danger: #e74c3c;
    --background: #f0f2f5;   /* Um cinza suave que "descansa" os olhos */
    --header-bg: #ffffff;
    --card-bg: #ffffff;
    --text-main: #2c3e50;
    --text-muted: #546e7a;   /* Cinza azulado para textos secundários */
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    background-color: var(--background); /* Fundo agora tem cor */
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* --- HEADER --- */
header {
    background-color: var(--header-bg);
    padding: 1rem 5%;
    border-bottom: 1px solid #dce4ec;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
    margin: 0;
}

nav a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover {
    color: var(--secondary);
}

/* --- HERO (Agora com degradê sutil para quebrar o branco) --- */
.hero {
    text-align: center;
    padding: 80px 10% 60px 10%;
    /* Degradê do cinza para o fundo da página */
    background: linear-gradient(to bottom, #e9ecef 0%, var(--background) 100%);
}

.hero h1 {
    font-size: 2.8rem;
    color: var(--primary);
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: -1px;
}

/* --- CARDS (Destacando-se do fundo cinza) --- */
.cards-container {
    display: flex;
    justify-content: center;
    gap: 35px;
    padding: 0 5% 80px 5%;
    flex-wrap: wrap;
}

.card {
    background: var(--card-bg);
    padding: 50px 40px;
    border-radius: 16px;
    width: 300px;
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid rgba(0,0,0,0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.card h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.6rem;
}

.card p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* --- BOTÕES --- */
.btn {
    display: inline-block;
    padding: 14px 30px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    margin-top: 25px;
    transition: all 0.2s;
}

.btn:hover {
    background-color: var(--secondary);
    transform: scale(1.02);
}

/* --- SAÍDA RÁPIDA (Mantendo a visibilidade) --- */
#panic-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--danger);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 800;
    font-size: 12px;
    letter-spacing: 1px;
    z-index: 9999;
    box-shadow: 0 8px 20px rgba(231, 76, 60, 0.3);
    cursor: pointer;
}